A statement given to the AP by Obama's campaign said, "Senator Obama has no knowledge of her status but obviously believes that any and all appropriate laws be followed."
Onyango, 56, is part of Obama's large paternal family, with many related to him by blood whom he never knew growing up.
Obama's father, Barack Obama Sr., left the future presidential nominee when the boy was 2, and they reunited only once - for a monthlong visit when Obama was 10. The elder Obama lived most of his life in Kenya, where he fathered six other sons and a daughter with three other wives. He died in a car crash in 1982.
Obama was raised for the most part by his mother and her parents in Hawaii. He first met his father's side of the family when he traveled to Africa 20 years ago. He referred to Onyango as "Auntie Zeituni" when describing the trip in his memoir, saying she was "a proud woman."
Obama's campaign said he had seen her a few times since that meeting, beginning with a return trip to Kenya with his future wife, Michelle, in 1992. Onyango visited the family in Chicago on a tourist visa at Obama's invitation about nine years ago, the campaign said, stopping to visit friends on the East Coast before returning to Kenya.
She attended Obama's swearing-in to the U.S. Senate in 2004, but campaign officials said Obama provided no assistance in getting her a tourist visa and doesn't know the details of her stay. The campaign said he last heard from her about two years ago when she called saying she was in Boston, but he did not see her there.
Onyango's refusal to leave the country would represent an administrative, noncriminal violation of immigration law, meaning such cases are handled outside the criminal court system. Estimates vary, but many experts believe there are more than 10 million such immigrants in the U.S.
According to Federal Election Commission documents filed by the Obama campaign, Onyango has contributed $260 to Obama over a period of time. Under federal election law, only U.S. citizens or green-card holders are legally permitted to give money to campaigns. Onyango, who listed her employer as the Boston Housing Authority, gave in small increments to the Obama campaign. Her latest contribution was $5 on Sept. 19.
The AP could not immediately reach Onyango for comment. When a reporter went to her home Friday night, no one answered the door. A neighbor said she was often not home on weekends. Onyango did not immediately return telephone and written messages left at her home.
Onyango was instructed to leave the country by a U.S.
immigration judge who denied her asylum request, a person familiar with the matter told the AP. This person spoke on condition of anonymity because no one was authorized to discuss Onyango's case.
It was unclear why her request was rejected in 2004. A spokeswoman for U.S. Immigrations and Customs Enforcement, Kelly Nantel, said the government does not comment on an individual's citizenship status or immigration case.
Information about the deportation case was disclosed and confirmed by two separate sources, one a federal law enforcement official. The information they made available is known to officials in the federal government, but the AP could not establish whether anyone at a political level in the Bush administration or in the McCain campaign had been involved in its release.
Onyango's case - coming to light just days before the presidential election - led to an unusual nationwide directive within Immigrations and Customs Enforcement requiring that any deportations before Tuesday's election be approved at least at the level of the agency's regional directors, the U.S. law enforcement official told the AP.
The directive suggests that the administration is sensitive to the political implications of Onyango's case coming to light so close to the election.
The East African nation has been fractured in violence in recent years, including a period of two months of bloodshed after December 2007 that killed 1,500 people.
Boston Mayor Thomas Menino said Saturday that he had no idea how Onyango might have qualified for public housing with a standing deportation order. He said he's not involved in the operations of the agency, even though he appoints the head, because it runs mainly on federal and state dollars.
William McGonagle, deputy director of the Boston Housing Authority, said when contacted: "I know nothing about it and I've got no comment."
On the Net: